Engagement and disengagement control for a friction device

Details Engagement and disengagement control for a friction device Engagement and disengagement control for a friction device

1990-08-31

1991-08-20

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Operators

60413, 192109F, F16D 2514

Patent

active

050406531

ABSTRACT:
A friction device, such as a clutch or brake, has a fluid-operated piston that is pressurized to cause engagement of the friction device. An accumulator and flow restriction are disposed to assist in controlling engagement time of the friction device. The accumulator and flow restriction are disconnected from each other and from the friction device during disengagement. A shift valve is positioned to provide the desired fluid connections during engagement and disengagement.

REFERENCES:
patent: 3004447 (1961-10-01), Sand
patent: 3541791 (1970-11-01), Lvovsky et al.
patent: 3896705 (1975-07-01), Patton
patent: 4560044 (1985-12-01), Nagata
patent: 4867294 (1989-09-01), de Tuesta
patent: 4889016 (1989-12-01), Kuwayama et al.
patent: 4924731 (1990-05-01), Hayakawa et al.
patent: 4932282 (1990-06-01), Arisumi

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